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KC Sinha Mathematics Solution Class 11 Chapter 29 Derications and Rules of Differentiation Exercise 29.1

 Exercise 29.1

Page no 29.9

Type 1

Question 1 

If f(x)=x^{2}, find f^{\prime}(2)

Question 2

If f(x)=x^{3}+1, find f^{\prime}(3)

Question 3

If f(x)=x^{2}+2 x+7, find f^{\prime}(3)

Question 4

If f(x)=m x+c, find f^{\prime}(0)

Question 5

If f(t)=3 t^{2}+1, find f^{\prime}(1)

Question 6

Find the derivative of x at x=1

Question 7

Find the derivative of f(x)=3 x at x=2

Question 8

Find the derivative of 99 x at x=100.

Question 9

Find the derivative of x^{2}-2 at x=10

Question 10

Find the derivative of f^{\prime}(x)=3 at x=3.

Question 11

Find the derivative of the constant function f(x)=a for a fixed real number a.

Question 12

Find the derivative of \sin x at x=0.

Question 13

If f(x)=x^{3}+7 x^{2}+8 x-9, find f^{\prime}(4)

Question 14

If f(x)=x^{3}-2 x+1, show that f^{\prime}(2)=10 f^{\prime}(1)

Question 15

If f(x)=x^{2}-4 x+7, show that f^{\prime}(5)=2 f^{\prime}
(7 / 2)

Question 16

Find the derivative of the function f(x)=2 x^{2}+3 x-5 at x=-1 Also prove that f^{\prime}(0)+3 f^{\prime}(-1)=0

Question 17

For the function f given by f(x)=k x^{2}+7 x-4, f^{\prime}(5)=97 then find k

Question 18

for the function f given by f(x)=x^{2}+2 a x+5, f^{\prime}(1)=10, find a

Question 19

If f(x)=\frac{x-2}{x^{2}-3 x+2}, when x \neq 2 =1, when x=2 then find f^{\prime \prime}(2)

Type 2

Question 20

starting at time t=0, a particle moves along a line so that its position after t seconds is 5(t)=t^{2}-6 t+8 meters. Find its speed at time t=3 seconds.

Question 21

A particle moves along a line so that at time, t its position is s(t)=6 t-p^{2} What is its initial velocity ?

Question 22

A particle moves along a line so that its position at time t is s(t)=\frac{t^{2}+2}{t+1} units
Find its velocity at time t=3.

































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